A建同义词
create or replace synonym tabB for B. tabB;
create or replace synonym tabB for B. tabB;
B授权
grant select,update,insert,delete on B.tabB to A;
grant select,update,insert,delete on B.tabB to A;
grant select,update,insert,delete on B.tabB to A;
添加字段
alter table tablename add 字段 char(32);
删除字段
alter table tablename drop (字段);
